Rate of local response and depth of tumoricidal tissue penetration of Foscan-PDT [ Time Frame: post treatment ] [ Designated as safety issue: No ]

Secondary Outcome Measures:

Progression-free survival time, overall survival time [ Time Frame: Before first intervention and at months 1, 3, 6, 9, 12, 18 and 24 after intervention ] [ Designated as safety issue: Yes ]

Toxicity using WHO criteria and criteria for local toxicity in the biliary system [ Time Frame: Before first intervention and at months 1, 3, 6, 9, 12, 18 and 24 after intervention ] [ Designated as safety issue: Yes ]

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Please refer to this study by its ClinicalTrials.gov identifier: NCT01016002